DOLBY LABORATORIES INC

Ticker: DLB CUSIP: 25659T107 Class: Common Stock

FRONTIER CAPITAL MANAGEMENT CO LLC's Holding History (CIK: 0000351173)

Note: Option positions (PUT/CALL) are excluded.

Q4 2025

Shares 418,816 Value ($000) $26,896 Avg Close $66.55 Range $63.33 - $72.23

Q3 2025

Shares 726,866 Value ($000) $52,603 Avg Close $72.58 Range $68.17 - $75.82

Q2 2025

Shares 1,237,667 Value ($000) $91,909 Avg Close $73.57 Range $66.91 - $80.04

Q1 2025

Shares 1,209,424 Value ($000) $97,129 Avg Close $79.86 Range $73.65 - $87.57

Q4 2024

Shares 311,428 Value ($000) $24,323 Avg Close $74.21 Range $68.55 - $80.18

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	418,816	$26,896	$66.55	$63.33 - $72.23
Q3 2025	726,866	$52,603	$72.58	$68.17 - $75.82
Q2 2025	1,237,667	$91,909	$73.57	$66.91 - $80.04
Q1 2025	1,209,424	$97,129	$79.86	$73.65 - $87.57
Q4 2024	311,428	$24,323	$74.21	$68.55 - $80.18